Related by context. Frequent words. (Click for all words.) 59 #.#C [004] 59 troposphere 57 Medieval Warm Period 56 mid latitudes 55 interglacial period 54 atmospheric CO 54 solar nebula 54 atmospheric concentrations 52 sunspot activity 52 glaciation 52 CO2 concentrations 52 temperature gradient 52 Younger Dryas 51 equatorial 51 auroral 51 temperature 51 lithosphere 51 planet orbits 51 sunspot cycle 51 latitudes 51 Little Ice Age 51 continental crust 50 Saturn moon Enceladus 50 interglacial 50 Greenland glaciers 50 atmospheric CO2 50 stratospheric ozone 50 polar regions 50 greenhouse warming 50 thermosphere 50 radiative forcing 50 X ray emission 49 equatorial Pacific Ocean 49 irradiance 49 water vapor 49 equatorial regions 49 ocean acidity 49 aerosol particles 49 sunspots 49 sunspot 49 glacial melting 49 Greenland ice 49 Polar Regions 49 ocean ridges 49 ozone depletion 49 equator 49 decadal 49 greenhouse gas concentrations 49 glacial melt 48 magma chamber 48 ionospheric 48 Saturn rings 48 oceanic crust 48 cirrus clouds 48 ° F 48 supernova remnant 48 HD #b [002] 48 lake sediments 48 Enceladus 48 oxygen isotopes 48 NSIDC 48 icecap 48 NASA Cassini spacecraft 48 coronal 48 retreating glaciers 48 polar caps 48 tropics 48 Earth magnetosphere 48 marine sediments 48 polar ice 48 sunspot numbers 47 atmospheric carbon dioxide 47 crustal 47 extrasolar planet 47 equatorial Pacific 47 Computer simulations 47 infrared wavelengths 47 convection 47 lavas 47 brown dwarf 47 ejecta 47 Pliocene 47 hotter summers 47 anomalously 47 Lindzen 47 glaciers 47 Fomalhaut 47 hot Jupiters 47 northern latitudes 47 temperate regions 46 oscillations 46 #.#C [002] 46 ° C 46 hydrological cycle 46 volcanism 46 permafrost 46 Antarctic ice 46 glacial ice 46 volcanic plume 46 ecliptic 46 convective